BPW21R Datasheet PDF – Photo Darlington Transistor

Part Number : BPW21R

Function : Photo Darlington Transistor for optical sensors with high sensitivity

Package : TO-5 Case Type

Manufacturers : Vishay Semiconductors

Image :

BPW21R datasheet


Description :

BPW21R is a planar Silicon PN photodiode in a hermetically sealed short TO-5 case, especially designed for high precision linear applications. Due to its extremely high dark resistance, the short circuit photocurrent is linear over seven decades of illumination level.


1. Package type: leaded
2. Package form: TO-5
3. Dimensions (in mm): Ø 8.13
4. Radiant sensitive area (in mm2): 7.5
5. High photo sensitivity
6. Adapted to human eye responsivity
7. Angle of half sensitivity: ϕ= ± 50°
8. Hermetically sealed package
9. Cathode connected to package
10. Flat glass window
11. Low dark current
12. High shunt resistance
13. High linearity
14. Compliant to RoHS Directive 2002/95/EC and in accordance with WEEE 2002/96/EC


1. Sensor in exposure and color measuring purposes

Other data sheets within the file : BPW21

BPW21R Datasheet PDF Download

BPW21R pdf


ULN2803LW Datasheet PDF – Darlington Array – Allegro

Part Number : ULN2803LW

Function : High-voltage, high-current darlington arrays

Package : SOP 18 Pin Type

Manufacturers : Allegro MicroSystems

Image :

ULN2803LW Darlington


Description :

Featuring continuous load current ratings to 500 mA for each of the drivers, the Series ULN28xxA/LW and ULQ28xxA/LW highvoltage, high-current Darlington arrays are ideally suited for interfacing between low-level logic circuitry and multiple peripheral power loads. Typical power loads totaling over 260 W (350 mA x 8, 95 V) can be controlled at an appropriate duty cycle depending on ambient
temperature and number of drivers turned on simultaneously. Typical loads include relays, solenoids, stepping motors, magnetic print hammers, multiplexed LED and incandescent displays, and heaters. All
devices feature open-collector outputs with integral clamp diodes.




ULN2803LW pinout


1. TTL, DTL, PMOS, or CMOS Compatible Inputs
2. Output Current to 500 mA
3. Output Voltage to 95 V
4. Transient-Protected Outputs
5. Dual In-Line Package or Wide-Body Small-Outline Package


Other data sheets within the file : ULN2803A, ULN2804A, ULN2823A, ULN2823LW, ULN2804LW, ULN2824LW

ULN2803LW Datasheet PDF Download

ULN2803LW pdf